DE69524128T2 - Dispersion-compensating optical fiber and optical transmission system with such an optical fiber - Google Patents

Dispersion-compensating optical fiber and optical transmission system with such an optical fiber

Info

Publication number
DE69524128T2
DE69524128T2 DE69524128T DE69524128T DE69524128T2 DE 69524128 T2 DE69524128 T2 DE 69524128T2 DE 69524128 T DE69524128 T DE 69524128T DE 69524128 T DE69524128 T DE 69524128T DE 69524128 T2 DE69524128 T2 DE 69524128T2
Authority
DE
Germany
Prior art keywords
optical fiber
dispersion
transmission system
optical
compensating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE69524128T
Other languages
German (de)
Other versions
DE69524128D1 (en
Inventor
Masashi Onishi
Hiroo Kanamori
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Publication of DE69524128D1 publication Critical patent/DE69524128D1/en
Application granted granted Critical
Publication of DE69524128T2 publication Critical patent/DE69524128T2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/02—Optical fibres with cladding with or without a coating
    • G02B6/036—Optical fibres with cladding with or without a coating core or cladding comprising multiple layers
    • G02B6/03616—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference
    • G02B6/03661—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference having 4 layers only
    • G02B6/03677—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference having 4 layers only arranged - + + -
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/02—Optical fibres with cladding with or without a coating
    • G02B6/02214—Optical fibres with cladding with or without a coating tailored to obtain the desired dispersion, e.g. dispersion shifted, dispersion flattened
    • G02B6/02219—Characterised by the wavelength dispersion properties in the silica low loss window around 1550 nm, i.e. S, C, L and U bands from 1460-1675 nm
    • G02B6/02252—Negative dispersion fibres at 1550 nm
    • G02B6/02261—Dispersion compensating fibres, i.e. for compensating positive dispersion of other fibres
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/02—Optical fibres with cladding with or without a coating
    • G02B6/02214—Optical fibres with cladding with or without a coating tailored to obtain the desired dispersion, e.g. dispersion shifted, dispersion flattened
    • G02B6/02285—Characterised by the polarisation mode dispersion [PMD] properties, e.g. for minimising PMD
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/02—Optical fibres with cladding with or without a coating
    • G02B6/036—Optical fibres with cladding with or without a coating core or cladding comprising multiple layers
    • G02B6/03605—Highest refractive index not on central axis
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/02—Optical fibres with cladding with or without a coating
    • G02B6/036—Optical fibres with cladding with or without a coating core or cladding comprising multiple layers
    • G02B6/03605—Highest refractive index not on central axis
    • G02B6/03611—Highest index adjacent to central axis region, e.g. annular core, coaxial ring, centreline depression affecting waveguiding
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/02—Optical fibres with cladding with or without a coating
    • G02B6/036—Optical fibres with cladding with or without a coating core or cladding comprising multiple layers
    • G02B6/03616—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference
    • G02B6/03622—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference having 2 layers only
    • G02B6/03627—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference having 2 layers only arranged - +
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/25—Arrangements specific to fibre transmission
    • H04B10/2507—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion
    • H04B10/2513—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion due to chromatic dispersion
    • H04B10/2525—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion due to chromatic dispersion using dispersion-compensating fibres
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/02—Optical fibres with cladding with or without a coating
    • G02B6/02214—Optical fibres with cladding with or without a coating tailored to obtain the desired dispersion, e.g. dispersion shifted, dispersion flattened
    • G02B6/0228—Characterised by the wavelength dispersion slope properties around 1550 nm

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
DE69524128T 1994-03-23 1995-03-23 Dispersion-compensating optical fiber and optical transmission system with such an optical fiber Expired - Fee Related DE69524128T2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6051680A JPH07261048A (en) 1994-03-23 1994-03-23 Dispersion compensating fiber

Publications (2)

Publication Number Publication Date
DE69524128D1 DE69524128D1 (en) 2002-01-10
DE69524128T2 true DE69524128T2 (en) 2002-07-04

Family

ID=12893606

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69524128T Expired - Fee Related DE69524128T2 (en) 1994-03-23 1995-03-23 Dispersion-compensating optical fiber and optical transmission system with such an optical fiber

Country Status (4)

Country Link
US (2) US5555340A (en)
EP (1) EP0674193B1 (en)
JP (1) JPH07261048A (en)
DE (1) DE69524128T2 (en)

Families Citing this family (76)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07261048A (en) * 1994-03-23 1995-10-13 Sumitomo Electric Ind Ltd Dispersion compensating fiber
FR2724234B1 (en) * 1994-09-05 1997-01-03 Alcatel Fibres Optiques SINGLE-MODE OPTICAL FIBER WITH OFFSET DISPERSION
JP3409935B2 (en) * 1995-01-13 2003-05-26 富士通株式会社 Single mode optical fiber, method of manufacturing the same, and optical fiber transmission line
CA2170815C (en) * 1995-03-10 2002-05-28 Youichi Akasaka Dispersion compensating optical fiber
US5740297A (en) * 1995-08-31 1998-04-14 Sumitomo Electric Industries, Ltd. Dispersion-compensating fiber and method of fabricating the same
US5822488A (en) * 1995-10-04 1998-10-13 Sumitomo Electric Industries, Inc. Single-mode optical fiber with plural core portions
KR0153835B1 (en) * 1995-11-07 1998-11-16 김광호 Process for preparation of optical glass fiber
US5649044A (en) * 1995-11-21 1997-07-15 Corning Incorporated Dispersion shifted optical waveguide
JPH09211249A (en) * 1995-11-28 1997-08-15 Sumitomo Electric Ind Ltd Single-mode optical fiber
US5802235A (en) * 1996-06-10 1998-09-01 Furukawa Electric Co Ltd Dispersion compensating fiber and its manufacturing method
AU714957B2 (en) * 1996-07-31 2000-01-13 Corning Incorporated Dispersion compensating single mode waveguide
US5999679A (en) 1997-07-14 1999-12-07 Corning Incorporated Dispersion compensating single mode waveguide
US5887104A (en) * 1996-08-20 1999-03-23 The Furukawa Electric Co., Ltd. Dispersion compensating optical fiber
DE19641577A1 (en) * 1996-09-30 1998-04-02 Deutsche Telekom Ag Dispersion compensation fiber
JPH10274720A (en) * 1997-01-29 1998-10-13 Sumitomo Electric Ind Ltd Single mode optical fiber
US6020584A (en) * 1997-02-14 2000-02-01 Corning Incorporated Method of measuring the polarization mode dispersion of an optical waveguide device
US5802234A (en) * 1997-03-21 1998-09-01 Lucent Technologies, Inc Dispersion compensating optical fiber, and communication system comprising same
JP3446944B2 (en) * 1997-09-10 2003-09-16 古河電気工業株式会社 Dispersion slope compensating optical fiber
CA2271694A1 (en) * 1997-09-10 1999-03-18 The Furukawa Electric Co., Ltd. Dispersion slope compensating optical fiber
US5887093A (en) * 1997-09-12 1999-03-23 Lucent Technologies Incorporated Optical fiber dispersion compensation
JP3337954B2 (en) * 1997-09-17 2002-10-28 株式会社フジクラ Dispersion compensating optical fiber
KR19990038607A (en) 1997-11-06 1999-06-05 윤종용 Singlemode Fiber with Multilevel Core Structure
CA2277332C (en) * 1997-12-05 2003-03-25 Sumitomo Electric Industries, Ltd. Dispersion-flattened optical fiber
US6421490B1 (en) * 1998-02-23 2002-07-16 Corning Incorporated Low slope dispersion managed waveguide
EP0989420A1 (en) * 1998-03-16 2000-03-29 The Furukawa Electric Co., Ltd. Wavelength-multiplexing optical transmission channel and optical fiber used therefor
EP1068550A4 (en) 1998-03-25 2004-06-02 Corning Inc Optical-transmission system having a split-gain amplifier and a signal-modifying device
US6321016B1 (en) * 1998-06-19 2001-11-20 Pirelli Cavi E Sistemi S.P.A. Optical fiber having low non-linearity for WDM transmission
EP0965866B1 (en) * 1998-06-19 2009-10-21 Prysmian S.p.A. Optical fiber having low non-linearity for WDM transmission
GB9814526D0 (en) * 1998-07-03 1998-09-02 Univ Southampton Optical fibre and optical fibre device
JP3682374B2 (en) * 1998-07-07 2005-08-10 古河電気工業株式会社 Optical fiber type optical components
KR100298172B1 (en) 1998-09-02 2001-09-22 김진찬 Optical fiber chromatic dispersion compensation device
EP1122562A4 (en) * 1998-09-18 2005-08-31 Sumitomo Electric Industries Dispersion compensating fiber
KR100636332B1 (en) 1998-09-21 2006-10-19 피렐리 카비 에 시스테미 소시에떼 퍼 아찌오니 Optical fiber for extended wavelength band
EP1127284B1 (en) * 1998-09-21 2004-03-10 Pirelli & C. S.p.A. Optical fiber for extended wavelength band
US6470126B1 (en) 1998-10-23 2002-10-22 The Furukawa Electric Co., Ltd. Dispersion compensating optical fiber, and wavelength division multiplexing transmission line using a dispersion compensating optical fiber
FR2786343A1 (en) * 1998-11-23 2000-05-26 Cit Alcatel DISPERSION COMPENSATION FIBER FOR WAVELENGTH MULTIPLEXED OPTICAL FIBER TRANSMISSION SYSTEM EMPLOYING OFFSET DISPERSED LINE FIBER
EP1146358A4 (en) 1998-11-26 2005-09-07 Sumitomo Electric Industries Optical fiber and optical transmission system including the same
CA2370448A1 (en) 1999-04-30 2000-11-09 Corning Incorporated Dispersion compensating fiber
US7194171B2 (en) * 1999-07-19 2007-03-20 Sumitomo Electric Industries, Ltd. Dispersion compensating optical fiber, dispersion compensating device, optical transmission line and optical transmission system
EP1072909A3 (en) * 1999-07-19 2004-01-28 Sumitomo Electric Industries, Ltd. Dispersion compensating optical fiber and optical transmission line
US20030086671A1 (en) * 1999-07-19 2003-05-08 Masao Tsukitani Dispersion compensating optical fiber and optical transmission line
US6805497B1 (en) 1999-11-04 2004-10-19 Sumitomo Electric Industries, Ltd. Optical transmission line
US6813430B2 (en) * 2000-02-29 2004-11-02 Fujikura, Ltd. Dispersion-compensating optical fiber and hybrid transmission line
US6445864B2 (en) 2000-03-24 2002-09-03 Corning Incorporated Dispersion compensating optical fiber
US6766088B2 (en) * 2000-05-01 2004-07-20 Sumitomo Electric Industries, Ltd. Optical fiber and method for making the same
JP4024461B2 (en) 2000-07-14 2007-12-19 富士通株式会社 Dispersion compensating optical fiber
JP2002071975A (en) * 2000-09-04 2002-03-12 Sumitomo Electric Ind Ltd Optical fiber grating element
JP2002250833A (en) 2000-12-22 2002-09-06 Furukawa Electric Co Ltd:The Optical fiber, dispersion compensator using the optical fiber and optical transmission system
US6483975B1 (en) * 2001-04-27 2002-11-19 Fitel Usa Corp. Positive dispersion optical fiber having large effective area
JP2003004995A (en) * 2001-06-26 2003-01-08 Fujikura Ltd Dispersion-compensated optical fiber and dispersion- compensated optical fiber module
US6768852B2 (en) * 2001-07-11 2004-07-27 Corning Incorporated Dispersion and slope compensating optical fiber and transmission link including same
US20030059186A1 (en) 2001-09-26 2003-03-27 Hebgen Peter G. L-band dispersion compensating fiber and transmission system including same
JP3886771B2 (en) * 2001-10-29 2007-02-28 株式会社フジクラ Single mode optical fiber and composite optical line for WDM
US6650814B2 (en) 2001-12-11 2003-11-18 Corning Incorporated Single mode dispersion compensating optical fiber
US6751390B2 (en) * 2001-12-11 2004-06-15 Corning Incorporation Dispersion and dispersion slope compensating fiber and optical transmission system utilizing same
US6909496B2 (en) * 2001-12-25 2005-06-21 Anritsu Corporation Method and device for easily and rapidly measuring nonlinear refractive index of optical fiber
US6757468B2 (en) * 2002-03-14 2004-06-29 Corning Incorporated Dispersion compensation optical fiber and optical transmission line using same
US6947652B2 (en) * 2002-06-14 2005-09-20 3M Innovative Properties Company Dual-band bend tolerant optical waveguide
US7239783B2 (en) * 2002-07-01 2007-07-03 Sumitomo Electric Industries, Ltd. Optical fiber, dispersion compensator, and optical transmission system
US7206484B2 (en) * 2002-07-01 2007-04-17 Sumitomo Electric Industries, Ltd. Optical fiber, dispersion compensator, and optical transmission system
US6975801B2 (en) 2002-07-15 2005-12-13 Corning Incorporated Dispersion compensating fiber for low slope transmission fiber and optical transmission line utilizing same
US20040076392A1 (en) * 2002-10-17 2004-04-22 Bickham Scott R. Low Kappa, dual-moat DC fiber and optical transmission line
WO2004095098A1 (en) * 2003-03-27 2004-11-04 Corning Incorporated High dispersion, wide band dispersion compensating optical fiber
JP2005055795A (en) * 2003-08-07 2005-03-03 Furukawa Electric Co Ltd:The Polarization holding optical fiber and optical wavelength converter using the same
US6925237B2 (en) * 2003-09-24 2005-08-02 Corning Incorporated High figure of merit dispersion compensating fiber for standard single mode fiber and transmission system utilizing same
FR2862453B1 (en) * 2003-11-17 2006-01-06 Cit Alcatel CHROMATIC DISPERSION COMPENSATION MODULE
US7130515B2 (en) * 2004-08-31 2006-10-31 3M Innovative Properties Company Triple-band bend tolerant optical waveguide
US7130516B2 (en) * 2004-08-31 2006-10-31 3M Innovative Properties Company Triple-band bend tolerant optical waveguide
FR2893149B1 (en) * 2005-11-10 2008-01-11 Draka Comteq France OPTICAL FIBER MONOMODE.
US7283713B1 (en) * 2006-04-05 2007-10-16 Corning Incorporated Highly dispersive dispersion compensating fiber for transmission fiber and transmission system utilizing same
FR2899693B1 (en) * 2006-04-10 2008-08-22 Draka Comteq France OPTICAL FIBER MONOMODE.
WO2008044600A1 (en) * 2006-10-04 2008-04-17 The Furukawa Electric Co., Ltd. Optical fiber and optical fiber transmission path
ES2480190T3 (en) 2007-11-09 2014-07-25 Draka Comteq B.V. Microcurvature resistant fiber optic
FR2930997B1 (en) 2008-05-06 2010-08-13 Draka Comteq France Sa OPTICAL FIBER MONOMODE
JP4698746B2 (en) * 2009-04-23 2011-06-08 富士通株式会社 Chromatic dispersion compensator
JP2019095649A (en) * 2017-11-24 2019-06-20 住友電気工業株式会社 Optical fiber and light source device

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3997241A (en) * 1973-06-07 1976-12-14 Hitachi, Ltd. Optical waveguide transmitting light wave energy in single mode
JPS5525643A (en) * 1978-08-11 1980-02-23 Mitsubishi Heavy Ind Ltd Method of carrying article
US4372647A (en) * 1979-10-08 1983-02-08 Nippon Telegraph & Telephone Public Corporation Single mode optical fibers
FR2502345B1 (en) * 1981-03-17 1985-01-04 Thomson Csf
US4715679A (en) * 1981-12-07 1987-12-29 Corning Glass Works Low dispersion, low-loss single-mode optical waveguide
US4447127A (en) * 1982-04-09 1984-05-08 Bell Telephone Laboratories, Incorporated Low loss single mode fiber
JPS59232302A (en) * 1983-06-15 1984-12-27 Sumitomo Electric Ind Ltd Fiber for optical transmission
JPS6252508A (en) * 1985-09-02 1987-03-07 Nippon Telegr & Teleph Corp <Ntt> Optical fiber
JPS62276207A (en) * 1986-05-21 1987-12-01 Honda Motor Co Ltd Locker arm
JPS62275207A (en) * 1986-05-23 1987-11-30 Fujitsu Ltd Single mode optical fiber
US4838643A (en) * 1988-03-23 1989-06-13 Alcatel Na, Inc. Single mode bend insensitive fiber for use in fiber optic guidance applications
JP2636876B2 (en) * 1988-04-08 1997-07-30 日本電信電話株式会社 Optical fiber dispersion compensator
JP2975642B2 (en) * 1989-06-13 1999-11-10 住友電気工業株式会社 Hermetic coated fiber and manufacturing method thereof
JPH03160403A (en) * 1989-11-20 1991-07-10 Hitachi Cable Ltd Low dispersion optical fiber
DE4001781C1 (en) * 1990-01-23 1991-02-21 Schott Glaswerke, 6500 Mainz, De
US5032001A (en) * 1990-03-09 1991-07-16 At&T Bell Laboratories Optical fiber having enhanced bend resistance
US5361319A (en) * 1992-02-04 1994-11-01 Corning Incorporated Dispersion compensating devices and systems
DE69324886T2 (en) * 1992-11-18 1999-09-30 At & T Corp Optical fiber with negative dispersion
US5448674A (en) * 1992-11-18 1995-09-05 At&T Corp. Article comprising a dispersion-compensating optical waveguide
US5278931A (en) * 1992-12-31 1994-01-11 Corning Incorporated Low bend loss singlemode optical waveguide fiber
JPH07261048A (en) * 1994-03-23 1995-10-13 Sumitomo Electric Ind Ltd Dispersion compensating fiber
US5553185A (en) * 1994-12-27 1996-09-03 Corning Incorporated Controlled dispersion optical waveguide

Also Published As

Publication number Publication date
EP0674193A2 (en) 1995-09-27
EP0674193A3 (en) 1995-12-13
JPH07261048A (en) 1995-10-13
DE69524128D1 (en) 2002-01-10
EP0674193B1 (en) 2001-11-28
US5742723A (en) 1998-04-21
US5555340A (en) 1996-09-10

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Legal Events

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8339 Ceased/non-payment of the annual fee